Question 1201395
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"5 to the square root of 6300"?<br>
Do you really mean {{{5^sqrt(6300)}}} ?  That's a very unusual expression -- an integer to a power that is irrational....<br>
Your post says "which expression represents the completely simplified radical?", but no expressions are shown in your post; so it is impossible for us to know what the actual given radical expression is....<br>
If the responses you have gotten are not what you were looking for, re-post the problem clearly and correctly.<br>